Last reviewed May 2026 · 1 min read
Is Ammonium Carbonate vegan?
Also known as: Baker's ammonia, E503, Hartshorn
E-number: E503
Vegan
Suitable for a vegan diet.
Yes — It is a mineral salt produced by reacting carbon dioxide and ammonia.
01 · The basics
What is Ammonium Carbonate?
A leavening agent often used in traditional baking, known as 'baker's ammonia'.
02 · The source
Where it comes from
It is a mineral salt produced by reacting carbon dioxide and ammonia. It is entirely vegan.
03 · Alternatives
Best vegan alternatives
Baking powder
Check Price on AmazonBaking soda
Check Price on AmazonAffiliate links — VegOmm may earn a commission from qualifying purchases.
Frequently asked
FAQ
Is E503 (Ammonium Carbonate) vegan?
Yes, it is a mineral-based product.
Why does my cookie smell like ammonia when baking?
This is normal! The ammonia gas is released during baking. This is why it is only used in thin, dry cookies where the gas can fully escape.
Commonly found in
More in this category
Other processing aid ingredients
Calcium Gluconate
A firming agent and acidity regulator.
Chitin
A fibrous substance consisting of polysaccharides, used in agriculture, winemaking, and dietary supplements (for weight loss).
Chitosan
A linear polysaccharide derived from chitin, heavily marketed in supplements as a 'fat binder' for weight loss.
Keep exploring
Related ingredients
Allura Red AC
A popular synthetic red food dye used to give foods and drinks a prominent red or pink color.
Tartrazine
A bright lemon-yellow synthetic food dye commonly used in processed foods, drinks, and medications.
Brilliant Blue FCF
A synthetic blue dye used in foods, cosmetics, and dietary supplements to achieve a vibrant blue hue.
What's next